Videos recorded by eyewitnesses show people jumping from the building - in one of them, a man can be seen hanging on to the side of the building before he jumps off.

"There was wooden panelling in the corridor, because of which people couldn't use the corridors to leave the hotel," firefighter Vipin Kenta told the Hindustan Times newspaper.

He said they were still investigating what caused the fire. Local media reported that most of the deaths were caused by suffocation.

'There was no fire equipment'

Vineet Khare, BBC Hindi

I met Somshekhar sitting on a bench outside the mortuary of Delhi's Ram Manohar Lohia Hospital where the dead and injured from the hotel fire have been taken.

He was gazing vacantly at TV journalists gathering information and policemen completing paperwork.

Mr Somshekhar said he had come to Delhi to attend his niece's wedding and was staying with his family on the second floor of the hotel.

The fire killed his 84-year-old mother, his brother and sister.

"There was a power cut at around 5am [23:30 GMT]. My sister who was in a nearby room shouted for help and asked everyone to get out. We opened the windows, but the smoke quickly filled the rooms. It all happened very quickly. There was no fire or emergency equipment," he said.

Mr Somshekhar's cousin and the bride's mother, Uma Nair, said she had not told her daughter, who is on her honeymoon, about the tragedy.

"They are in the Maldives. My daughter has read news stories about the fire and keeps calling me. I tell her everything is fine. But it's a matter of time before she finds out."

Fire accidents are not uncommon in Indian cities, where builders often flout safety regulations.

Many structures, both old and new, lack proper fire exits. In recent months, officials have shut down a number of shops and restaurants in some of Delhi's most exclusive neighbourhoods for not following fire safety measures.